remove deprecations, bump minor version

[Enchufa2]

This removes as.units, as_cf, make_unit and parse_unit, which have been deprecated for a long time (since v0.5, 2018-01-07), and consequently bumps version to 0.7-0. I removed all calls and mentions to them in docs, demos and tests.

I think it's time to remove ud_units too, which is unneeded and soft-deprecated since v0.5 as well (and it only generates confusion, e.g. #211), but I wanted to ask you @edzer first.

[codecov]

Codecov Report

Merging #259 (14b3549) into master (541a96c) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #259      +/-   ##
==========================================
+ Coverage   93.97%   94.05%   +0.07%     
==========================================
  Files          19       18       -1     
  Lines         897      891       -6     
==========================================
- Hits          843      838       -5     
+ Misses         54       53       -1     

Impacted Files	Coverage Δ
R/misc.R	100.00% <ø> (ø)
R/conversion.R	88.23% <100.00%> (ø)

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[edzer]

Good idea. What was again the reason to deprecate ud_units, do we no longer use it? I mention it in the vignette, that would need updating too.

[Enchufa2]

Prior to v0.5-0, ud_units was internally used by set_units and as_units. NEWS for v0.5-0 said:

ud_units is no longer necessary and is soft-deprecated, and may be removed in a future release.

[edzer]

OK, let's pull the plug. I'll update that vignette.

[Enchufa2]

Ok, plug pulled in the commit referenced above. I've removed:

• the private sysdata.rda;
• all the code associated;
• the few tests associated;
• all the examples in docs, demos and the other vignette.

I've converted every appearance of with(ud_units, someunit) to make_units(someunit).

[edzer]

Great!